Fluid-dispensing apparatus.



E. 0. BENNETT. FLUID DISPENSING APPARATUS. I APPLIOATION FILED DEO.17,1912.

1,085,789. Patented Feb. 3, 1914. TF1 .7. VJ /0 \V Q) L k W i "ii i JJz? 22 Q g i WWW 28 9 Zii UNITED STATES PATENT OFFICE.

EDGAR C. BENNETT, OF DAYTON, OHIO, ASSIGNOR ONIEl-I-IAL]? TO OSCAR E.JONES; OF DAYTON, OHIO.

FLUID-DISPENSING- APPARATUS.

Patented Feb. 3, 1944.

To all whom it may concern:

Be it known that I, EDGAR C. BENNETT, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Fluid-DispensingApparatus, of which the following. is a specification.

My invention relates to fluid dispensing apparatus.

The object of the invention is to simplify the structure as well as themeans and mode of operation ofsuch devices whereby they will not only becheapened in construction but will be more eflicient in use, automaticin operation, easily and quickly adjusted and unlikely to get out ofrepair. 7

A further object of the invention is to provide improved means forforcibly expelling the fluid, and for varying the pressure with whichthe fluid is discharged, and to place the discharging apparatus undertension with minimum exertion of the operator.

With the above primary and other incidental objects in view as will morefully appearv in the specification, the invention consists of thefeatures of construction, the parts and combinations thereof and themode of operation or their equivalents as herein'- after described andset forth in the claims.

In the drawings, Figure 1 is a perspec tive view of the assembledapparatus equipped with an applicator for ap lying the .aint. F ig.'2 isa vertical sectiona new of t e assembled apparatus. Fig. 3 is a detailbottom plan view of the yoke. Fig. 4 is a detail view of a modificationof the yoke and its connection.

Like parts are indicated by similar characters of reference throughoutthe several views.

While the fluid discharging apparatus forming the subject matter hereofhas been herein shown and described as a stationary apparatus which mayhowever be carried from place to place, it is obvious that an apparatusembodying similar features of construction but of smaller size might becarried onthe back of the operator. in the manner of a knapsack. It isequally obvious that a similar apparatus but of larger size mightbemounted upon wheels for convenient transportation from place to place.without interfering'ln any way with theprinciples of construction ormode of op: eration.

In constructing the apparatus, there is employed a reservoir 1preferably, though not necessarily, cylindrical in form for the 6 0spray solution, paint or other liquid to be discharged. The reservoir 1is mounted upon a suitable base 2. A discharge conduit 3 leads from thereservoir 1. and is provided with a out off valve 4. The dischargeconduit 3 preferably, though not necessarily, communicates with theinterior of the reservoir through an inclined channel or groove .voir.lis a piston 7 the rod or stem 8 of which projects through a suitablebearing sleeve 9 upon the cover of the reservoir and is screw threadedon its outerportion .as shown at 10. For convenience and rapidity ofadjustment the screw thread of the piston rod 8 is preferably made ofgreat pitch. Screw threaded upon the piston rod 8 is an adjusting nut orsleeve 11 provided with radially disposed arms 12 by which the sleevemay convenientlybe rotated. At its lower end the sleeve 11 is providedwithan inclined or convex flange or collar 13.

Engaging the flange- 13 ofthe nut or sleeve 11 is a transversedetachable yoke 14 having at its central portion an enlargemen-t 15-formed with a concave under surface 16 corresponding to the convexinclined surface of the flan e or collar 13. The enlarged centralportion of the yoke 14. is provided with a laterally disposed slot 17 ofsufficient size for the nut or sleeve 11 to enter therein. Theconstruction is such conduit 3 to the applicator asthat when the sleeve11 is engaged within For the purpose of strengthening the centralportion of the yoke a rib -18 is preferably provided. While the convexconcave formation of the sleeve flange 13 and yoke 14 thus describedisthe preferred form it is obvious that this construction may bemodified. For instance the contour of the parts might be reversed andthe annular flange 18 of the nut or sleeve 11 might be formed with aconcave depression in the upper face thereof to be engaged by acorresponding protruding portion upon the yoke 14.. It is equallyobvious that the collar 13 might be formed withv fiat parallel faces asshown at 19, in the modification, Fig. 4, the yoke being formed with apendant flange 20 engaging about the periphery of the collar 19. in thisconstruction the flange 20 would prevent the lateral displacement of theyoke until elevated above the plane of the flange 19. Any suchconstruction which would prevent the accidental lateral displacementofthe yoke while permitting a revoluble movement of the nut or sleeve 11independent of the yoke would serve the purpose.

Engaged with the opposite ends of the yoke 1e are helical retractingsprings 21 which are connected at their opposite ends to ears or lugs 22upon the base 2. The tendency of the springs 21 when placed undertension is to reciprocate the piston 7 downward within the reservoir 1.

Communicating with the reservoir 1 at a point above the highest plane ofoperation of the piston 7 is an inlet conduit 23 communicating with afunnel 24 through which the liquid may be introduced to the reservoir.For convenience the funnel 24 is preferably detachable from thereservoirand it may be provided with any suitable filter or screen in the usualmanner.

Any suitable nozzle or applicator may be employed with the apparatus.For use as a spraying device the applicator will preferably comprise asection of pipe term nating in a suitable spray nozzle adapted todistribute the liquid in a fine spray. In Fig. 1 there has been shown anapplicator comprising a paint brush 25 of ordinary construction. Thehandle of the brush 25 has been provided with a longitudinally disposedchannelthrough which'extends one arm 2@ of a 'l shaped conduit, thetransverse arm 27 of which is located within the body of bristlesforming the brush and is perforated as shown at 28. The conduit 26communicates with the flexible conduit or hose 6 and for convenience ofthe operator is preferably provided adjacent to the handie of the brushwitha cut off valve 29." To prevent the breaking of the flexible conduit6 by being abruptly bent adjacent to the applicator there is provided aprotective helical coil 30 which permits a limited flex-g ing movementof the conduit adjacent to the applicator but prevents any abrupt 'yokemay be readily engaged therewith.

weaves bending thereof. A band 31 preferably of rubber or some otherflexible material but which might be constructed of metal encircles thebody of the brush 25, and projects\ toward the extremities of thebristles a limited distance beyond their juncture point with the handleand beyond the transverse perforated conduit 27. This band forms intheapplicator an auxiliary reservoir to prevent the loss of paintand tomomentarily retain the discharge between strokes of the brush.

In the operation of the apparatus after the contents of the .reservoir'lhave been dis-' charged the piston 7 with the nut or sleeve 11 and yoke14: carried upon the stem 8 of the piston will be found in theirlowermost position. The yoke 14: is disconnected from the sleeve 11 bylifting the yoke upward to disengage it from the flange 13 and thenshifting it laterally to disengage the nut or sleeve 11 from the slot 17If the tension of the retracting springs 21' is found to be too great topermit the ready disengagement of the yoke and sleeve, the sleeve 11 maybe screwed downward upon the piston stem 8 by means of the arms 12 untilthe tension of the retracting springs 21 is relaxed. The yoke it havingbeen disengaged from the piston the latter is raised to the upward limitof its stroke where will occupy a position above the planeof the inletconduit 24. With the piston in this position an additional supply offluid may be introduced into the reservoir through the funnel 25. Theyoke 14 is then reengaged with the sleeve 11 upon the piston stem 8. Ifit is found that the tension ofthe springs 21 is too great to permit theengagement of the oke with the sleeve when the piston is restmg on topof the contents of the reservoir the nut or sleeve 11 may be screweddownward upon the stem 8 to a position where the The springs 21 are thenplaced under tension to exert a discharging pressure-upon the fluidwithin the reservoir by screwing the sleeve 11 upward upon the stem 8.The pressure with which the fluid isdischarged from the reservoir willbe regulated by the heightv to which the sleeve 11 is adjusted above thetop of the reservoir. Asthe contents of the reservoir are exhausted andthe discharge pressure thereof reduced, the nut or sleeve 11 may beadjusted upward upon the stem 8 from time. to time to maintain thedesired operating pressure. By this means the entire contents of thereservoir will be rendered available.

From the above description it will be ap- 125 parent that there is thusproduced a device of. the character described possessing the proportion,detail construction and arrangement of parts without de arting from theprincipleinvolved or sacrlficing any ofits advantages.

Having thus described my invention, I claim;

1.- In a fluid dispensing apparatus, a-reservoir having a dischargeconduit leading therefrom, a movable piston within the res-. ervoir andbearing upon the contents thereof,.a screw threaded stem for saidpiston, an adjusting nut on said screw threaded stem, a yoke journaledon said nut, whereby the nut may be revolubly adjusted on the stemindependent of the yoke, actuating springs attached to the yoke andadapted to move the piston within the IGSBI;V01I, the tension of whichis varied by" the adjustment of the adjusting nut upon the piston stem,substantially as specified. Y

2. In a fluid dispensing apparatus, a reservoir having a dischargeconduit leading therefrom, a movable piston within the reservoir andbearing upon the ,contents thereof, a screw threaded stem for thepiston, an adjusting nut vupon said stem, 'a yoke having a recesstherein, within which the nut projects and wherein the nut is revoluble,independent of the yoke, and retracting means engaged by the yoke tomove the piston, the tension of which is varied by the adjustmentof thenut, substantially as speci- 3. In afluid dispensing apparatus, areservoir having a discharge conduit leading therefrom, a movable pistonwithin the reservoir and bearing upon' the contents thereof, a screwthreaded stem for said piston, an adjusting 'n'ut on said screw threadednut, said yoke having a slot therein within "which the nut engages,corresponding interengaging faces upon the yoke and nut 'ada t-- ed toprevent the lateral displacement oft e yoke prior to alongitudinalmovement thereof in relation to the piston stem, andpistonretracting means engaged by. the yoke, substantially as specified. 7

5. In a fluid dispensing apparatus, a reservoir having a dischargeconduit leading therefrom, a movable piston Within the reservoir andbearing upon the contents thereof, a screw threaded stem for the pis-'ton, an adjusting nut thereon, a yoke adapted to be detachably engagedwith. the nut, interengaging means between the yoke and nut adapted toretain'the engagement of the nut and yoke while permlttlng a 'revolublemovement of the nut independent of the yoke, substantially as specified.

In testimony whereof, I- have hereunto set my hand this 23rd day ofNovember, 1912. 4

. EDGAR CA BENNETT.

' Witnesses:

EZRA M. KUHNS, F. L. WALKER.

